Added a README, development details and how to run

Lab2/README.md

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+# Lab 2: Implementation and Application of HMAC - Andreas Gagas 
+
+**Language:** C++
+**OS**: Windows 10
+**IDE**: Visual Studio 2019, but developed without project mode, compiled separate .cpp 
+files with MSVC on command line. 
+**External Libraries**: Crypto++ 8.2.0, built as static library (cryptlib Release Win32) 
+<br/>
+**How to include library, if needed**
+* Download Crypto++ 8.2.0 and extract ...  [crypto++ download page](https://www.cryptopp.com/index.html#download)
+* Open crypttest.sln or cryptlib.vcxproj in Visual Studio. Build -> Batch Build -> SELECT cryptlib Release Win32 ->  **BUILD**.
+* Copy the cryptlib.lib (in cryptopp820 -> win32 -> Output -> Release -> cryptlib.lib) in same folder as .cpp files (server.cpp and client.cpp).
+-   Because of my header declarations, make sure the entire cryptopp820 folder and cryptlib.lib are in the same folder with .cpp files.
+-   Folder will include **server.cpp, client.cpp, cryptopp820, cryptlib.lib, key_des.txt, key_hmac.txt**
+
+**How to include run**
+- (x2)  Tools -> Command Line -> Developer Powershell
+-   cl.exe server.cpp /EHsc /MT
+-   cl.exe client.cpp /EHsc /MT
+-   **run the server first:**  ./server
+-   **run the client second:**  ./client
+-   .. started communication
+
+**Other:** video included that shows compilation, and the running of the server and client. 
+**Repository**: https://github.com/AndreasG9/3319-Labs/tree/master/Lab2